Motocross

Suzuki RM-Z450

Motocross, 449cc 4T, 2027

Partly verified

Illustration: a Suzuki motocross bike, not this exact model.

Gearing

2 of 5 filled

Stock front sprocket: Not yet verified
Stock rear sprocket: Not yet verified
Chain pitch: 520; Manufacturer spec sheet (research), checked 2026-09-27 (source 1)
Stock chain links: 114; Manufacturer spec sheet (research), checked 2026-09-27 (source 1)
Stock final drive ratio: Not yet verified

Wheels and tires

2 of 4 filled

Front rim: Not yet verified
Rear rim: Not yet verified
Front tire: 80/100-21 51M; Manufacturer spec sheet (research), checked 2026-09-27 (source 1)
Rear tire: 110/90-19 62M; Manufacturer spec sheet (research), checked 2026-09-27 (source 1)

Suspension

1 of 7 filled

Fork: Inverted telescopic, coil spring, oil damped, adjustable damping force; Manufacturer spec sheet (research), checked 2026-09-27 (source 1)
Fork travel: Not yet verified
Shock travel: Not yet verified
Stock fork spring rate: Not yet verified
Stock shock spring rate: Not yet verified
Static sag, bike only: Not yet verified
Race sag, rider on: Not yet verified

Fluids and capacities

1 of 5 filled

Engine oil spec: Not yet verified
Engine oil capacity: Not yet verified
Coolant capacity: Not yet verified
Premix ratio: Not yet verified
Fuel capacity: 6.3 L (1.66 gal); Manufacturer spec sheet (research), checked 2026-09-27 (source 1)

Dimensions

3 of 3 filled

Seat height: 960 mm (37.8 in); Manufacturer spec sheet (research), checked 2026-09-27 (source 1)
Wheelbase: 1480 mm (58.3 in); Manufacturer spec sheet (research), checked 2026-09-27 (source 1)
Weight: 112 kg (247 lb); Manufacturer spec sheet (research), checked 2026-09-27 (source 1)

Solid marks are owner's-manual pages; hollow marks are manufacturer web or spec-sheet figures still waiting on a manual page. Last reviewed 2026-09-27. Rows marked not yet verified are blank on purpose.

What's missing

0 of 25 fields read off a manual page.

Not yet verified (16): front sprocket, rear sprocket, front rim, rear rim, fork travel, shock travel, fork spring rate, shock spring rate, static sag, race sag, engine oil spec, engine oil capacity, coolant capacity, tire pressure (off-road), chain slack, spark plug and gap.

From a spec sheet, awaiting a manual page (9): chain pitch, chain links, front tire, rear tire, fork, fuel capacity, seat height, wheelbase, weight.

See coverage for every bike

Use this bike

Tools for this bike

Tire sizes

Compare with

Buying parts

The stock sizes and specs this bike left the factory with, each with its source. Take them to any shop. Retailer links will appear here once a store approves MotoXSports.

Chain: Chain pitch 520 Manufacturer spec sheet (research)Stock chain links 114 Manufacturer spec sheet (research)
Tires: Front tire 80/100-21 51M Manufacturer spec sheet (research)Rear tire 110/90-19 62M Manufacturer spec sheet (research)

7 part specs not yet verified; see data coverage.

Gearing tool

The calculator prefills from this bike once its stock sprockets are verified. It works with any numbers in the meantime.

Open the gearing calculator

Sources

1
Suzuki 2027 RM-Z450 specifications (suzukicycles.com)Manufacturer web or spec sheet, research level. Covers chain pitch, stock chain links, front tire, rear tire, fork, fuel capacity, seat height, wheelbase, weight; checked 2026-09-27.

Always confirm against the manual for your exact year before ordering parts or setting up suspension. Torque specs are deliberately not published here. How we verify a value.

My settings

Date / track
Sprockets run
Race sag / free sag
Fork air pressure or spring
Fork clickers (compression / rebound)
Shock clickers (low / high / rebound)
Tire pressures (front / rear)
Notes

All bikes